Weather on May 15
Santa Rosa, CA
55 Years of Data
Avg High
75°F
Avg Low
49°F
Warmest
2008
85°F avg
Coldest
2011
49°F avg
About This Date
May 15th in Santa Rosa, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 49°F — a 26°F daily swing. Over 55 years of records, the warmest May 15th was in 2008 (85°F average), while the coldest was 2011 (49°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 15th dates historically, with the wettest May 15th recording 1.85" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for May 15th in Santa Rosa, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 48° | 63° | — | — |
| 2024 | 73° | 50° | 62° | — | — |
| 2023 | 75° | 52° | 63° | — | — |
| 2022 | 83° | 52° | 67° | — | — |
| 2021 | 74° | 47° | 60° | — | — |
| 2020 | 77° | 51° | 64° | — | — |
| 2019 | 67° | 49° | 58° | 1.85" | — |
| 2018 | 68° | 51° | 60° | — | — |
| 2017 | 74° | 46° | 60° | — | — |
| 2016 | 77° | 51° | 64° | — | — |
| 2015 | 69° | 47° | 58° | — | — |
| 2014 | 88° | 54° | 71° | — | — |
| 2013 | 77° | 47° | 62° | — | — |
| 2012 | 67° | 48° | 57° | — | — |
| 2011coldest | 58° | 41° | 49° | 1.17" | — |
| 2010 | 69° | 48° | 59° | — | — |
| 2009 | 85° | 54° | 69° | — | — |
| 2008warmest | 100° | 70° | 85° | — | — |
| 2007 | 65° | 46° | 55° | — | — |
| 2006 | 86° | 60° | 73° | — | — |
| 2005 | 76° | 57° | 66° | — | — |
| 2004 | 81° | 47° | 64° | — | — |
| 2003 | 70° | 43° | 56° | — | — |
| 2002 | 74° | 47° | 60° | — | — |
| 2001 | 72° | 52° | 62° | — | — |
| 2000 | 63° | 48° | 55° | — | — |
| 1999 | 68° | 44° | 56° | — | — |
| 1998 | 65° | 46° | 55° | — | — |
| 1997 | 82° | 56° | 69° | — | — |
| 1996 | 65° | 58° | 61° | 1.65" | — |
| 1995 | 66° | 51° | 59° | — | — |
| 1994 | 76° | 51° | 63° | — | — |
| 1993 | 72° | 47° | 59° | — | — |
| 1992 | 65° | 50° | 57° | — | — |
| 1991 | 72° | 46° | 59° | — | — |
| 1990 | 72° | 46° | 59° | — | — |
| 1989 | 68° | 50° | 59° | — | — |
| 1988 | 76° | 49° | 62° | — | — |
| 1987 | 84° | 54° | 69° | — | — |
| 1986 | 74° | 49° | 61° | — | — |
| 1985 | 81° | 46° | 63° | — | — |
| 1984 | 68° | 47° | 57° | — | — |
| 1983 | 80° | 54° | 67° | — | — |
| 1982 | 76° | 44° | 60° | — | — |
| 1981 | 73° | 51° | 62° | — | — |
| 1980 | 73° | 42° | 58° | — | — |
| 1979 | 78° | 48° | 63° | — | — |
| 1978 | 80° | 45° | 62° | 0.2" | — |
| 1977 | 75° | 42° | 59° | — | — |
| 1976 | 92° | 46° | 69° | — | — |
| 1975 | 74° | 44° | 59° | — | — |
| 1974 | 73° | 44° | 59° | — | — |
| 1973 | 80° | 46° | 63° | — | — |
| 1972 | 87° | 46° | 67° | — | — |
| 1971 | 79° | 45° | 62° | — | — |
55 years of data from SANTA ROSA